Math is In My World

Connect math to everyday life with decimals, multi-digit computation, and real-world problem solving.

5.NBT Review · Decimals & Computation
Level
Guided practice with vocabulary support

🟠 Level 0 — Extra Support

Sentence starters: “First, I…” · “The answer is… because…” · “I know this because…”
W

Warm-Up

2 questions
Warm-Up 1
Which decimal is equal to the fraction 3/4?
Think about it: 3/4 means 3 divided by 4. You can also think: 1/4 = 0.25, so 3/4 = 3 × 0.25 = ?
✓Correct! 3 ÷ 4 = 0.75. This is a key decimal-fraction pair to remember!
✗3/4 = 3 ÷ 4 = 0.75. The answer is B.
Warm-Up 2
You have $10.00 and buy a snack for $3.50. How much money do you have left?
Strategy: Subtract: $10.00 − $3.50. Line up the decimal points and subtract.
✓Correct! $10.00 − $3.50 = $6.50. Math is in your wallet!
✗Subtract: $10.00 − $3.50 = $6.50 (A). Remember to line up the decimal points.
P

Practice

5 questions
Practice 1
A recipe calls for 2.5 cups of flour. If you want to make a double batch, how many cups of flour do you need?
Double means multiply by 2. So calculate 2.5 × 2. Think: 2 × 2 = 4 and 0.5 × 2 = 1. Add them together.
Show your thinking:

Sentence frame: "To double 2.5, I multiplied ___ × 2 = ___."

✓Correct! 2.5 × 2 = 5.0 cups. Doubling a recipe is real-world math!
✗2.5 × 2 = 5.0. The answer is C.
Practice 2
A basketball player scored 24, 18, and 30 points in three games. What is the total number of points?
Strategy: Add all three numbers: 24 + 18 + 30. Try adding 24 + 30 first (they make a friendly number), then add 18.
Total points =

Sentence frame: "I added ___ + ___ + ___ = ___."

✓Correct! 24 + 18 + 30 = 72 points total. Sports stats use math everywhere!
✗24 + 30 = 54, then 54 + 18 = 72.
Practice 3
Sort each decimal into the correct range on the number line.
Tip: Think about where each decimal falls. Is it less than 1? Between 1 and 5? Or greater than 5?
0.25
3.75
8.50
0.90
2.10
6.05
Less than 1
Between 1 and 5
Greater than 5
✓All correct! Understanding where decimals fall on a number line is key to real-world math.
✗Some decimals are in the wrong range. Check: 0.25 and 0.90 are less than 1; 2.10 and 3.75 are between 1 and 5; 6.05 and 8.50 are greater than 5.
Practice 4
Solve each real-world computation.
Tip: Line up decimal points for addition/subtraction. Use place value for multiplication.
a. $4.25 + $3.75 =
b. 156 + 287 =
c. 500 − 238 =

Sentence frame: "I solved ___ by ___."

✓All correct! $4.25 + $3.75 = $8.00, 156 + 287 = 443, 500 − 238 = 262.
✗Check your work: $4.25 + $3.75 = $8.00, 156 + 287 = 443, 500 − 238 = 262.
Practice 5
A family drives 145 miles on Saturday and 178 miles on Sunday. How many more miles did they drive on Sunday?
Key word: "How many more" means subtract. Find 178 − 145.
How did you solve this?

Sentence frame: "I subtracted ___ − ___ = ___ because 'how many more' means find the difference."

✓Correct! 178 − 145 = 33 more miles. Math helps us compare real distances!
✗178 − 145 = 33 miles (B). "How many more" tells you to subtract.
★

Challenge

1 question
Challenge
You are planning a class party. Juice boxes cost $0.75 each and you need 24 for the whole class. Cookies cost $0.50 each and you need 24. What is the total cost for juice boxes and cookies?
Step by step: First find the cost of 24 juice boxes: 24 × $0.75. Then find the cost of 24 cookies: 24 × $0.50. Finally, add both costs together.
Show your work:

Sentence frame: "Juice boxes cost 24 × $0.75 = $___. Cookies cost 24 × $0.50 = $___. Total = $___ + $___ = $___."

✓Excellent! 24 × $0.75 = $18.00 for juice. 24 × $0.50 = $12.00 for cookies. Total = $30.00. Math is in your world!
✗24 × $0.75 = $18.00 and 24 × $0.50 = $12.00. Total = $18.00 + $12.00 = $30.00 (C).